Facebook to deliver Paper news app, with Rebecca Lieb in USA Today

Paper comes as a shot across the bow to Google's News, Twitter, LinkedIn's Pulse news reader and Flipboard's magazine-like reader, among others. With Paper, launching without ads, Facebook can clearly advertise against news.

"This could be a threat to Flipboard and this could take some traffic away from Google news -- it's an advertising product, obviously. Advertisers are very comfortable advertising in news," says Altimeter Group analyst Rebecca Lieb...